heat recovery from R744 based refrigeration system

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heat recovery from R744 based refrigeration system ( heat-recovery-from-r744-based-refrigeration-system )

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Figure 41 COP and variation in COP with gas cooler side pressure .......................................37 Table 1 Comparative results from previous experimental studies...........................................38 Figure 42 Gas cooler effectiveness with approach temperature at gas cooler outlet (CO2 side) .................................................................................................................................................. 39 Figure 43 Gas cooler effectiveness with variation in heating capacity ...................................40 Figure 44 cooling and heating profiles with variation in approach temperature ..................... 40 Figure 45 Lorenz efficiency with approach temperature.........................................................41 Figure 46 Effectiveness with approach temperature for 3RD heat exchanger ........................42 Figure 47 Effectiveness with heating capacity for 3RD heat exchanger.................................42 Figure 48 Variation of Lorenz efficiency with approach temperature ....................................43 Figure 49 Variation of cooling and heating profile with approach temperature......................43 Figure 50 Entropy produced in expansion valve and compressor ...........................................45 Figure 51 Entropy produced in gas cooler and evaporator......................................................46 Figure 52 Entropy production in components against gas cooler pressure .............................46 Figure 53 Variation of exergy efficiency for compressor and expansion valve ...................... 47 Figure 54 Variation of exergy efficiency for gas cooler and evaporator.................................47 x

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